Does anyone know the name of this mod / script?

[SteYou2014]

There is what looks like a briefcase. You pick it up and in your inventory you can right click it.  It has the option of something like "claim reward" and when you click that, it will automatically spawn a crate with some random items like cinderblocks, gold bars, et etc

[Hux]

Maybe this?

 

 

 

[SteYou2014]

That's it :D thanks, Hux!